topic Re: Timechart Command to calculate totals for 7 days in Splunk Search

Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 19:51:45 GMT

I have a search that I'm using to populate some charts in a dashboard. The search is checking a log and charting the top 20 users who have used the most disk space in their home directories. It works great for a 24 hour period...However I can't seem to get it to work for longer periods such as 7 days or more.

What I'd like to do is that if you choose 7 days, it would display the top 20 users who were using the most space after pretty much calculating space usage for 7 days per user. You'd be able to see the user's space usage over a 7 day period. This would allow you to see when a spike may have occurred that caused a disk issue.

The search I have right now is :

host="ynfs1" sourcetype=userdiskusage earliest=-1d@d latest=-0d@d | rex field=_raw "(?<Space>[\d]+)\s*\/home\/(?<UserName>\S+)" max_match=1000 | search NOT UserName="shares" | table UserName Space | sort -Space | head 20

This search is used to create an area chart on a dashboard. I have a time range picker to change the time from 24 hours to 7 days, but when I do the results are not what I would like. Nothing happens for the most part. Here's my dashboard code:

    <view template="dashboard.html">
  <label>YNFS1 Space Usage</label>
  <module name="AccountBar" layoutPanel="navigationHeader"/>
  <module name="AppBar" layoutPanel="navigationHeader"/>

  <module name="Message" layoutPanel="messaging">
    <param name="filter">*</param>
    <param name="clearOnJobDispatch">False</param>
    <param name="maxSize">1</param>
  </module>

  <module name="TimeRangePicker" layoutPanel="panel_row1_col1">
    <param name="searchWhenChanged">True</param>
    <param name="default">Last 24 hours</param>
      <module name="HiddenSavedSearch" layoutPanel="panel_row2_col1" group="Space Usage by user over a given time" autoRun="True">
        <param name="savedSearch">Andrew ynfs1 search</param>
        <module name="HiddenChartFormatter">
          <param name="charting.chart">area</param>
          <param name="chart.stackMode">stacked</param>
          <param name="secondaryAxisTitle.text">Space</param>
          <module name="JobProgressIndicator"></module>
            <module name="FlashChart">
              <param name="width">100%</param>
              <param name="height">400px</param>
            </module>
          </module>
          <module name="ViewRedirectorLink">
            <param name="viewTarget">flashtimeline</param>
            <param name="popup">True</param>      
          </module> 
      </module>
      <module name="HiddenSavedSearch" layoutPanel="panel_row3_col1" group="Space Usage by user over a given time" autoRun="True">
        <param name="savedSearch">Andrew ynfs1 search</param>
        <module name="HiddenChartFormatter">
          <param name="charting.chart">pie</param>
          <module name="JobProgressIndicator">
            <module name="FlashChart">
              <param name="width">100%</param>
              <param name="height">400px</param>
             </module>
          </module>
          <module name="ViewRedirectorLink">
            <param name="viewTarget">flashtimeline</param>
            <param name="popup">True</param>      
          </module> 
        </module>
     </module>
     <module name="HiddenSavedSearch" layoutPanel="panel_row3_col2" group="Space Usage by user over a given time" autoRun="True">
       <param name="savedSearch">Andrew ynfs1 search</param>
       <module name="SimpleResultsTable"></module>
       <module name="ViewRedirectorLink">
         <param name="viewTarget">flashtimeline</param>
         <param name="popup">True</param>      
       </module> 
    </module>
  </module> 
</view>

I've been looking into timechart as I believe I have to use this command to make this happen. I also tried doing a timechart sum of Space by Username but the results didn't look right. Any ideas?

Re: Timechart Command to calculate totals for 7 days

RicoSuave — Mon, 28 Sep 2020 10:12:00 GMT

I think the first issue here is that you hardcoded the timerange into the search. try removing the earliest and latest. That should fix your timerange dropdown issue. Try the following search

Re: Timechart Command to calculate totals for 7 days

RicoSuave — Wed, 07 Dec 2011 20:35:03 GMT

You should be able to chart this. If you want to have a little more granularity into space usage, change the span to 1h or 1m or whatever you want.

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:06:14 GMT

it just says no results found and the charts are empty.

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:06:17 GMT

let me try running it manually

Re: Timechart Command to calculate totals for 7 days

RicoSuave — Mon, 28 Sep 2020 10:12:03 GMT

my bad run this:

I forgot to add the "as day" after bucket _time span=1d It should work now.

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:28:16 GMT

still not working. what's the eval day=strftime

Re: Timechart Command to calculate totals for 7 days

RicoSuave — Mon, 28 Sep 2020 10:12:06 GMT

ah it looks like your rex field extraction is all lowercase. try this:

strftime: This function takes an epochtime value, X, as the first argument and renders it as a string using the format specified by Y.

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:34:29 GMT

The search stops producing any results as soon as I do the chart command. I tried using timechart but didn't seem to get it right. Also the only results I have is a list of _time and that's it.

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:34:55 GMT

also i left the hardcoded time range in the search just to see if the charts did work. my bad

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:38:41 GMT

it's not a case issue. that didn't work

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 21:41:13 GMT

Also what about the | head 20? How is this search going to show me the top 20 disk hogs over a period of time?

Re: Timechart Command to calculate totals for 7 days

gnovak — Mon, 28 Sep 2020 10:12:09 GMT

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 22:01:52 GMT

I'm going to look at the Time Based Charting Tools in UI examples for some hints. ugh!

Re: Timechart Command to calculate totals for 7 days

RicoSuave — Wed, 07 Dec 2011 22:08:44 GMT

what is a typical result for your space field look like?

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 22:12:28 GMT

UserName Space
1 bruce 43236824
2 fhu 41706896
3 lfan 39659892
4 hzhou 32397800
5 gsp 29841020
6 lyuan 29492256
7 mkarimi 27565896
8 jfu 25898072
9 jpfletch 25440672
10 mselvi 25278628

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 22:12:49 GMT

looks like this using the original search i posted.

Re: Timechart Command to calculate totals for 7 days

RicoSuave — Wed, 07 Dec 2011 22:18:45 GMT

host="ynfs1" sourcetype=userdiskusage earliest=-1d@d latest=-0d@d | rex field=_raw "(?<Space>[\d]+)\s*\/home\/(?<UserName>\S+)" max_match=1000 | search NOT UserName="shares" | chart sum(Space) over UserName

Does that produce anything when typed in exactly?

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 22:22:17 GMT

yep i got stuff

Re: Timechart Command to calculate totals for 7 days

gnovak — Wed, 07 Dec 2011 22:22:36 GMT

let me try something